Patent GB-145381-A (GB)
Title: Improvements in or relating to taximeters
IPC: G07B13/00
Filed: 1919-03-22
Abstract: 145,381. Phillips, F. W. March 22, 1919. Taximeters.-Mechanism for effecting a mixed time and distance drive and providing for working off the minimum fare is described in connexion with the taximeter devices set forth in Specifications 145,139 and 145,381. Mixed time and distance drive.-A gear-wheel n loose on a spindle c is driven from the road wheel through a worm and a one-way ratchet drive and carries two pawls o adapted to engage a fast ratchet-wheel p. A fixed pinion q may be driven from the clock through a train including a floating pinion t mounted on a lever u pivoted at v. When the clock drive is the faster, the pawls o are overrun by the ratchet-wheel p, but when the road drive is greater the floating pinion rides idly upon the pinion q. Minimum fare, devices for registering and adjusting.-Fixed to the spindle c is a flanged disk 5 on the flange 6 of which may rest a roller 20 carried by a lever 18 pivoted at 19. A pin 17 on an extension of this lever co-operates with the heel of a lever 9 adapted through a pawl 10 to rotate the ratchet-wheel 11 of the pence dial. When the flag shaft is turned to an operative position, the lever 18 is allowed to rest on the flange 6, in which position, however, no operation of the pence dial can occur. When the minimum fare has been worked off, the flange has rotated sufficiently to bring a gap under the roller 20, which consequently falls and engages a star-wheel 8. The standard increment is thus added to the minimum fare shown on the dials and the subsequent additions are made as usual. Resetting-mechanism, arrangement of.-When the flag-shaft 62 is rotated into the " for hire " position, a lever 101 is rocked by a cam 99 out of engagement with one end 104 of a lever 1 to allow this lever to slide a disk x along the shaft c so that two projections 2 on the disk pass through slots in the wheel n and disengage the pawls o from the ratchet-wheel p. The tip of the lever 101 then engages a heart-cam 106 and resets the spindle c so that the gap of the flange 6 is just in advance of the roller 20. A cam 115 on the flag-shaft acting through a lever 116 and pin 118 raises the lever 18 to its normal position above and free of the flange 6, the roller 20 being pivotally and resiliently mounted to enable it to pass by the edge of the flange in this movement. By means of a stirrup 4 on the lever u the lever 18 simultaneously raises the floating pinion t out of engagement with the pinion q. Fare and distance totalizers.-The total dietance run is registered on a counter 58 by means of a lever 70 rocked by pins 71 on a vehicledriven disk 72. The lowering of the flag is registered by a lever 60 actuated by a tappet 61 on the flag-shaft 62. The fare increments are totalized by a counter 57 through an arm 64 on a spindle 65 provided with another arm 66 having a pin 67 normally free of a slotted projection 68 of the lever 18. When the roller on the latter passes through the gap in the flange 6 the pin enters the slot and the counter is operated both then and at each subsequent oscillation of the lever by the star wheel 8.